Evolution

Questioning the Impact Theory: What Really Killed the Dinosaurs?

About sixty five and a half million years ago, the Earth suffered its largest known cosmic impact. An asteroid or…

7 years ago

Asteroid That Dwarfed Dinosaur-Killer Punched Earth 3 Billion Years Ago, Study Says

Early in Earth's history, a killer asteroid smashed a hole in our planet about 300 miles (500 kilometers) wide, which…

7 years ago

Did Life On Earth As We Know It Come From ‘Geological Life’?

When it comes to life on Earth, we're not sure if it came from the outside (transported by comets) or…

7 years ago

Astronomers See Snow … In Space!

There's an excellent chance of frost in this corner of the universe: astronomers have spotted a "snow line" in a…

8 years ago

Russian Asteroid Explosion and Past Impactors Paint a Potentially Grim Future for Earth

The recent meteor explosion over Chelyabinsk brought to the forefront a topic that has worried astronomers for years, namely that an impactor…

8 years ago

What Craters on the Moon Teach Us About Earth

When the Moon was receiving its highest number of impacts, so was Earth. Credit: Dan Durda Some questions about our…

8 years ago

In an Isolated, Ice-Covered Antarctic Lake Far Below Freezing, Life is Found

Lake Vida lies within one of Antarctica's cold, arid McMurdo Dry Valleys (Photo: Desert Research Institute) Even inside an almost…

9 years ago

Hunting for High Life: What Lives in Earth’s Stratosphere?

The Moon photographed through the layers of the atmosphere from the ISS in December 2003 (NASA/JSC) What lives at the…

9 years ago

When Everything On Earth Died

[/caption] Hey, remember that one time when 90% of all life on Earth got wiped out? I don't either. But…

9 years ago